What is CVE-2020-7643?

CVE-2020-7643 is a medium-severity vulnerability in Idea Paypal-Adaptive, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.3/10. Published 2020-04-23.

How severe is CVE-2020-7643?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Prototype Pollution in Idea Paypal-Adaptive

CVE-2020-7643

paypal-adaptive through 0.4.2 manipulation of JavaScript objects resulting in Prototype Pollution. The PayPal function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

Vulnerability class: Prototype Pollution

Published 2020-04-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.9th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Idea Paypal-Adaptive
Paypal-Adaptive — versions All versions including 0.4.2

Weakness classification (CWE)

CWE-1321 — Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution)

References

github.com/Ideame/paypal-adaptive-sdk-nodejs/blob/master/lib/paypal-adaptive.js (Exploit, Third Party Advisory)
snyk.io/vuln/SNYK-JS-PAYPALADAPTIVE-565089 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-7643?: CVE-2020-7643 is a medium-severity vulnerability in Idea Paypal-Adaptive, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 5.3/10. Published 2020-04-23.
How severe is CVE-2020-7643?: Medium severity. CVSS v3 base score is 5.3 out of 10.